This thermostat is exactly what I wanted. I had installed a Honeywell Prestige IAQ ($$$) thermostat and was frustrated by the lack of a temperature differential control setpoint. That thing cycled continuously, whereas with this thermostat you can set the differentials for each stage of heating, saving energy and compressor life. There was a glitch in the control sequence for my particular thermostat and for my particular settings, causing for an error. I contacted the manufacturer and they acknowledged the error and are sending a replacement thermostat with updated software. Now THAT is customer service from a manufacturer!

This thermostat is exactly what I wanted. I had installed a Honeywell Prestige IAQ ($$$) thermostat and was frustrated by the lack of a temperature differential control setpoint. That thing cycled continuously, whereas with this thermostat you can set the differentials for each stage of heating, saving energy and compressor life. There was a glitch in the control sequence for my particular thermostat and for my particular settings, causing for an error. I contacted the manufacturer and they acknowledged the error and are sending a replacement thermostat with updated software. Now THAT is customer service from a manufacturer!